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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2017-09-18 16:10:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-08 10:26:12 +0200 |
| commit | 75903d40aaec3328e17bc6c89ea96b4fc1c602eb (patch) | |
| tree | 2f96f33ae42840bed1b2f5b6be7ea70d8e96fb78 /Documentation/video-output.txt | |
| parent | 14b502e491a8ea9257c9cbe4b7b0800e6e9a7473 (diff) | |
s390/mm: make pmdp_invalidate() do invalidation only
commit 91c575b335766effa6103eba42a82aea560c365f upstream.
Commit 227be799c39a ("s390/mm: uninline pmdp_xxx functions from pgtable.h")
inadvertently changed the behavior of pmdp_invalidate(), so that it now
clears the pmd instead of just marking it as invalid. Fix this by restoring
the original behavior.
A possible impact of the misbehaving pmdp_invalidate() would be the
MADV_DONTNEED races (see commits ced10803 and 58ceeb6b), although we
should not have any negative impact on the related dirty/young flags,
since those flags are not set by the hardware on s390.
Fixes: 227be799c39a ("s390/mm: uninline pmdp_xxx functions from pgtable.h")
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/video-output.txt')
0 files changed, 0 insertions, 0 deletions